公开(公告)号：US12217797B2

公开(公告)日：2025-02-04

申请号：US17806333

申请日：2022-06-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hojin Chun ,  Jiwon Park

IPC: G11C14/00

Abstract: A method of operating a storage device includes: sensing an external voltage supplied from a host device; selecting a data transfer mode, where the data transfer mode is either a normal mode or a brown-out mode according to the external voltage; and performing a write operation or a read operation according to the selected mode, wherein: the data transfer mode is selected as the normal mode when the external voltage is within a normal range between a first operation voltage and a second operation voltage, and the data transfer mode is selected as the brown-out mode when the external voltage is within a low power range below the normal range and between the second operation voltage and a power-off detection voltage; and wherein one or more types of input/output operations of the host device are supported in both the normal mode and the brown-out mode.

公开(公告)号：US12142317B2

公开(公告)日：2024-11-12

申请号：US17876077

申请日：2022-07-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hojin Chun ,  Minsung Kil ,  Hyoungtaek Lim

IPC: G11C5/14 ,  G11C14/00

Abstract: A storage device includes a main system; a power loss protection integrated circuit (PLP IC) configured to provide output power to the main system based on external or internal power; and an auxiliary power supply configured to provide the internal power to the PLP IC. The main system may operate in a dump mode where data is backed up in response to at least one of a first condition or a second condition being satisfied. The PLP IC may provide the output power based on the internal power in response to a sudden power off (SPO) occurring. The first condition is satisfied when the SPO occurs and an SPO time is longer than a maximum filtering time. The second condition is satisfied when the SPO occurs and a voltage level of the internal power provided by the auxiliary power supply is lower than a voltage level of a threshold voltage.

公开(公告)号：US20230138032A1

公开(公告)日：2023-05-04

申请号：US17806333

申请日：2022-06-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hojin Chun ,  Jiwon Park

IPC: G11C14/00

Abstract: A method of operating a storage device includes: sensing an external voltage supplied from a host device; selecting a data transfer mode, where the data transfer mode is either a normal mode or a brown-out mode according to the external voltage; and performing a write operation or a read operation according to the selected mode, wherein: the data transfer mode is selected as the normal mode when the external voltage is within a normal range between a first operation voltage and a second operation voltage, and the data transfer mode is selected as the brown-out mode when the external voltage is within a low power range below the normal range and between the second operation voltage and a power-off detection voltage; and wherein one or more types of input/output operations of the host device are supported in both the normal mode and the brown-out mode.